Patents by Inventor Seiichi Nagai
Seiichi Nagai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7596312Abstract: A small-sized camera module in which an adhesive does not flow in side electrodes is provided. In the camera module according to the embodiment of the invention, the adhesive does not flow in concave portions thanks to a protection wall for covering top portions of the concave portions formed on a substrate. Accordingly, the side electrodes formed in the concave portions can be securely electrically connected to a contact or a drawing substrate. A lower portion of a holder can be disposed adjacent to the concave portions. Thus, the size of the substrate can be formed as small as possible, so it is possible to obtain the small-sized camera module.Type: GrantFiled: April 20, 2007Date of Patent: September 29, 2009Assignee: ALPS Electric Co., Ltd.Inventors: Takuya Watanabe, Satoshi Wada, Seiichi Nagai
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Publication number: 20070253708Abstract: A small-sized camera module in which an adhesive does not flow in side electrodes is provided. In the camera module according to the embodiment of the invention, the adhesive does not flow in concave portions thanks to a protection wall for covering top portions of the concave portions formed on a substrate. Accordingly, the side electrodes formed in the concave portions can be securely electrically connected to a contact or a drawing substrate. A lower portion of a holder can be disposed adjacent to the concave portions. Thus, the size of the substrate can be formed as small as possible, so it is possible to obtain the small-sized camera module.Type: ApplicationFiled: April 20, 2007Publication date: November 1, 2007Inventors: Takuya Watanabe, Satoshi Wada, Seiichi Nagai
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Publication number: 20070116452Abstract: A camera module includes a lens barrel holding a lens, and a main body holding the lens barrel, the lens barrel being capable of moving relative to the main body in the direction of the optical axis of the lens. The lens barrel has a protuberance on the underside thereof throughout the circumferential direction. The main body has a recess at a position corresponding to the protuberance of the lens barrel throughout the circumferential direction, the recess accommodating the protuberance. The protuberance is formed so as to have a height such that the protuberance is disposed in the recess both before and after the movement of the lens barrel relative to the main body in the direction of the optical axis of the lens.Type: ApplicationFiled: September 18, 2006Publication date: May 24, 2007Inventors: Masaru Aoki, Seiichi Nagai
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Patent number: 6201660Abstract: According to the structure of a conventional magnetic recording/reproducing apparatus, the loading and unloading of a cartridge are effected by pushing the cartridge into the apparatus manually against the biasing force of a plate spring which serves as a cartridge holding member, thus requiring a large force (about 0.5 to 1 Kgf) for the cartridge loading and unloading operation. In the magnetic recording/reproducing apparatus of the present invention, a slide member having retaining rollers is attached to a housing slidably and the retaining rollers are brought into engagement with engaging portions of a cartridge. In this state the slide member is allowed to slide to effect loading and unloading of the cartridge.Type: GrantFiled: June 9, 1998Date of Patent: March 13, 2001Assignee: Alps Electric Co., Ltd.Inventor: Seiichi Nagai
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Patent number: 6137121Abstract: An optical semiconductor device used for optical information processing, such as writing information into and reading information from an optical disk. The optical semiconductor device includes a Si substrate, a light emitting element, and a reflector for reflecting light emitted from the light emitting element in a direction perpendicular to the mounting surface of the Si substrate. The reflector has a reflecting surface inclined by 45.degree. from a bottom face and formed by etching a single crystal of Si.Type: GrantFiled: June 26, 1998Date of Patent: October 24, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yousuke Yamamoto, Yoshikazu Tanaka, Seiichi Nagai, Mitsuo Ishii, Isao Oshima, Kazuyoshi Hasegawa
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Patent number: 6081405Abstract: The magnetic recording and reproducing device of the present invention is made such that after the transfer roller and the driving roller are press contacted to each other, the slide member is slid to cause the aforesaid transfer roller to be moved in a direction away from the aforesaid driving roller.Type: GrantFiled: July 15, 1998Date of Patent: June 27, 2000Assignee: Alps Electric Co., Ltd.Inventor: Seiichi Nagai
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Patent number: 5345345Abstract: According to the invention, there is provided a rotary head type magnetic recording/reproducing unit comprising a drum for receiving in close contact a magnetic tape on its periphery and a pair of magnetic heads arranged on the drum for running slantly on the magnetic tape for recording or reproduction of signals, wherein the span of contact of the drum's periphery and the magnetic tape is greater than that of a signal recording or reproducing operation on the magnetic tape by either of the magnetic heads. With such an arrangement, signal recording or reproducing operations of the unit can be conducted under a condition where the tape and the magnetic head are stably in contact with each other and therefore any distorted or deformed envelope waveforms may be eliminated.Type: GrantFiled: July 19, 1993Date of Patent: September 6, 1994Assignee: Alps Electric Co., Ltd.Inventors: Tatsumaro Yamashita, Seiichi Nagai
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Patent number: 5105237Abstract: A semiconductor light-emitting device which provides optically undistorted light includes a semiconductor light-emitting element and at least one optical element. The light emitting-element and the optical element are held in a resin which is transparent to light emitted from the light-emitting element so that light emitted from the light-emitting element travels to the optical element along an optical path entirely within the resin, but the light exits a portion of the optical element located outside of the resin.Type: GrantFiled: July 3, 1991Date of Patent: April 14, 1992Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kazuyoshi Hasegawa, Masayuki Kubota, Mitsuo Ishii, Seiichi Nagai
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Patent number: 5021900Abstract: A tape guide driving device for a rotating head type tape player having a mechanism for moving separately from each other a pinch roller and a tape guide. The rotating head type tape player includes a rotating head device, a capstan, and a tape feeding member that pulls a magnetic tape from an inserted cassette pack and moves it to a position at which it is wound on the rotating head device and to the position of the capstan provided on a chassis. A roller lever is provided that supports the pinch roller and moves the pinch roller from a position opposed to the inside of the tape within a cassette pack to the position close to the capstan, and a guide lever supports the tape guide and moves the tape guide from a position opposed to the inside of the tape within the cassette pack.During operation, the guide lever is pressed by the movement of the roller lever having the pinch roller which causes the tape guide to move.Type: GrantFiled: November 21, 1989Date of Patent: June 4, 1991Assignee: Alps Electric Co., Ltd.Inventors: Tatsumaro Yamashita, Seiichi Nagai
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Patent number: 4995687Abstract: A semiconductor laser device and method of producing the same in which a laser diode chip is mounted on a stem via a heat sink. The cap is fixed to the stem covering the chip and includes a penetrating aperture, a lens for collimating light from the chip into penetrating aperture, and an optical fiber for guiding the collimated light which is fixed to the penetrating aperture after insertion to a desired depth.Type: GrantFiled: October 23, 1989Date of Patent: February 26, 1991Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Seiichi Nagai, Mitsuo Ishii, Kazuyoshi Hasegawa
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Patent number: 4947238Abstract: A submount for a semiconductor laser element includes a substrate and a barrier layer disposed on opposed surfaces of the substrate and including a plurality of layers wherein the outermost layer of the barrier layers is Au and Ag. A metal alloy solder layer comprising Sn, Ag, and Sb is deposited on the barrier layers.Type: GrantFiled: May 1, 1989Date of Patent: August 7, 1990Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Mitsuo Ishii, Seiichi Nagai, Kazuyoshi Hasegawa, Toshio Tanaka
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Patent number: 4001873Abstract: A polycrystalline silicon film is disposed on the face of an N type silicon substrate including a termination of a PN junction to extend slightly beyond the termination of the PN junction from the periphery of the substrate. In the most preferred embodiment, the polycrystalline silicon film terminates short of both the termination of the PN junction and the periphery of the substrate and is enclosed with silicon dioxide, the silicon dioxide being also disposed at the termination of the PN junction and on the adjacent portions of the main substrate face on its both side as well as on the periphery of the main face.Type: GrantFiled: December 23, 1974Date of Patent: January 4, 1977Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yasuya Kajiwara, Seiichi Nagai, Hiroyasu Hagino
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Patent number: 3933541Abstract: A silicon dioxide film and a silicon nitride film are successively vapor-deposited on a main face of an N type silicon substrate processed with H.sub.2 O.sub.2 water. Those portions of both films underlaid by a P type region to be subsequently formed and their peripheral portions are selectively removed. Then a P type impurity is diffused into the central exposed portion of the main substrate face to form the P type region with a PN junction having a termination facing the silicon dioxide film. Also a silicon dioxide film is thermally formed on the peripheral exposed portion of the main face.Type: GrantFiled: January 20, 1975Date of Patent: January 20, 1976Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroyasu Hagino, Yasuya Kajiwara, Seiichi Nagai